component_model 0.17.0

Revolutionary type-safe component assignment for Rust. Build complex objects with zero boilerplate using derive macros and type-driven field setting. Perfect for configuration builders, fluent APIs, and object composition patterns.
Documentation 
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use super :: *;

// Define a source tuple struct with several fields
#[ derive( Debug, Default, PartialEq, Clone ) ] // Added Clone for manual impl
struct SourceTuple(i32, String, f32);

// Define a target tuple struct (no derive here)
#[ derive( Debug, Default, PartialEq ) ]
struct TargetTuple(i32, String);

// Implement From< &SourceTuple > for each type it contains that TargetTuple needs
impl From< &SourceTuple > for i32 
{
  #[ inline( always ) ]
  fn from( src: &SourceTuple ) -> Self 
  {
  src.0
 }
}

impl From< &SourceTuple > for String 
{
  #[ inline( always ) ]
  fn from( src: &SourceTuple ) -> Self 
  {
  src.1.clone()
 }
}

// Manual implementation of From< T > for TargetTuple
impl< T > From< T > for TargetTuple
where
  T: Into< i32 >,
  T: Into< String >,
  T: Clone, // The generic T needs Clone for the assignments below
{
  #[ inline( always ) ]
  fn from( src: T ) -> Self 
  {
  let field0 = Into :: < i32 > ::into( src.clone() );
  let field1 = Into :: < String > ::into( src.clone() );
  Self( field0, field1 ) // Use tuple constructor syntax
 }
}

//

// Reuse the same test logic
include!("./only_test/from_components_tuple.rs");